Milton



(No Model.)

M. 0. REEVES. SPLIT PULLEY.

No 409,427. Patented Aug. 20, 1889.

' UNITED STATES PATENT OEEIcE.

MILTON O. REEVES, OF COLUMBUS, INDIANA, ASSIGNOR TO THE REEVES PULIJEYCOMPANY, OF SAME PLACE.

SPLIT PU LLEY.

SPECIFICATION forming part of Letters Patent No. 409,427, dated August20, 1889.

Application filed March 29, 1889- Serial No. 312,635. (No model.)

To all whom it may concern.-

Be it known that I, MILTON O. REEVES, a

citizen of the United States, residing at Columbus, in the county ofBartholomew and State of Indiana, have invented a new and usefulImprovement in Split Pulleys, of which the following is a specification.7

My invention relates to an improvement in wooden split pulleys.

The object of my improvementis to provide improved means for securin thepulley to the shaft, as hereinafter fully described.

The accompanying drawings illustrate my invention.

Figure 1 represents a side elevation of the complete pulley. Fig. 2represents a plan of the meeting edges of the two separable semicircularsections of which the pulley is formed.

The semicircular rim A is built up of a series of annular woodensegments, several thicknesses being secured one upon another to form thewidth of face required in the usual well-known manner. The'cnds of eachsemicircular rim-section are connected by a series of thin cross-bars OO O of like contour arranged side by side, having their ends built intothe rim A and forming a part thereof in such a manner that there are aseries of spaces 1) 1) parallel with the plane of the pulley between thecross-bars. Acompound cross-bar consisting of the bars 0 O O is thusformed in each section of the pulley. This construction of the cross-barforms the subject-matter of claims in another application for a patentnow pending, Serial No. 311,887, and therefore is not herein claimed.The bars 0 and spaces 1) of both sections are arranged to register whenthe two sections are put together, and the sections are temporarily heldconcentric with each other by pins (Z (Z, passing transversely acrossthe bars in the joint. The two sections are clamped together by bolts c(2, arranged to pass through the spaces b and engaging the cross-bars ofboth sections.

For the purpose of securing the pulley to the shaft I cut transverselyacross the edge of the compound crossbar of one of the sections acentral semicircular recess f, adapted to receive one side of the shaft,or a semicircular bushing 72, which is of such interior diameter as tofit closely one side of the shaft S. A metallic cap I, having on itsunder side a semicircular groove 23, adapted to fit the shaft and havingone or more set-screwsj passing through the cap, is clamped upon theshaft by bolts 7t 7t, passing through the cap and through the spaces Z)of the cross-bar. A recess Zis cut in the compound cross-bar of theother section, so as to clear the cap I when the two sections aresecured together.

In securing the pulley to a shaft the two sections are separated andthat section having the semicircular groove and cap is secured to theshaft by clamping the shaft between the cap and the cross-bar and thenturning the set-screws j in until they engage the shaft. It will beobserved that when the cap I is in position on the shaft and a bushingis used the cap overlaps the edges of the semicircular bushing, and thatit is therefore impossible for the bushing to turn in the cross-bar, andby the use of the set-screws in the metallic cap the shaft is held muchmore securely against turning than when dependence is placed on theclamping-friction alone of the cap. IVhen one sect-ion of the pulley hasbeen secured to the shaft, the remaining section is secured to the firstby the bolts 6 c, as before explained.

I claim as my invention- 1. In a split pulley, the two semicircularrimsections each having a diametrical cross-bar, one of which cross'barsis provided with a groove adapted to receive a shaft, the cap having asemicircular groove and provided with a set-screw projectinginto saidgroove, means for clamping said cap and cross-bar together, so as toembrace the shaft between them, and the bolts for clamping the twopulley-sections together, all combined and arranged substantially asspecified.

2. In a split pulley, the two semicircular rimsections each havingacompound diametrical cross-bar, said bar con sisting'of a series ofthin fiat bars having their ends secured in the rim and arranged side byside, with open spaces between them parallel with the plane of thepulley, one of said compound cross-bars having a central groove adaptedto receive one side of a shaft, a cap adapted to receive the oppositeside of the shaft and provided with a set-screw, means for clamping saidcap and cross-bars together so as to embrace the shaft between them, andbolts arranged in the spaces between the members of the compoundcross-bars so as to engage the bars of both rim-sections and clamp themtogether, all combined substantially as specified.

3. In asplit pulley having two sections each provided with a diametricalcross-bar the combination, with one of said cross-bars having a centralsemicircular groove across its edge, of the semicircular bushing fittedin said groove and adapted to receive one side of a shaft, and the capadapted to receive the opposite side of the shaft and to be clamped tothe cross-bar and arranged to overlap the edges of the bushing so as toprevent it from turning, substantially as specified.

MILTON O. REEVES. lVitnesses:

J. W. LoPP, CHARLES F. REMY.

